60%
To find this, set up a ratio:
12/20 = x/100
X being the percentage.
Cross multiply 12 and 100 before dividing it by 20 to receive the final answer of 60.
Hope this helps!
(a) 1/3 hour plus 1/2 hour is 5/6 hour. The LCD here is 6.
(b) That would be 7 times 5/6 hour, or 35/6 hours, or 5 5/6 hours.
(c) Convert 35/6 hours (from part b) into minutes:
35 hours 10 min 350 min
------------ * ----------------- = ------------- = 350 min
6 (1/6) hr 1
C is the answer to this problem
He withdrew 20$, it says he starts with 45 but the equation says he has 25
Answer:
- large: 40 lbs
- small: 20 lbs
Step-by-step explanation:
A system of equations can be written for the weights of the boxes based on the relationships given in the problem statement. One equation will be for the total weight of 1 large and 1 small box; the other will be for the total weight of 70 large and 60 small boxes.
Let L and S represent the weights of Large and Small boxes, respectively. The system of equations is ...
L + S = 60 . . . . . . combined weight is 60 lbs
70L +60S = 4000 . . . . weight of boxes in the truck
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We can solve this by substituting for s in the second equation.
70L +60(60 -L) = 4000
10L = 400 . . . . . . . . . subtract 3600, simplify
L = 40
S = 60 -L = 20
A large box weighs 40 pounds; a small box weighs 20 pounds.